<template>
    <div>
      <div style="width: 1380px; height: 800px; background-color: #ffffff" ref="chart"></div>

    </div>
</template>

<script>
export default {
  name: "EchartPointer",
  mounted() {
    this.$nextTick(function() {
      this.drawPie();
    });
  },
  methods: {
    drawPie() {
      let start=new Date();
      let myChart = this.$echarts.init(this.$refs.chart);
      let   option = {
        legend: {},
        tooltip: {
          trigger: 'axis',
          showContent: false
        },
        dataset: {
          source: [
            ['product', '2017', '2018', '2019', '2020', '2021', '2022'],
            ['默认', 56.5, 82.1, 88.7, 70.1, 53.4, 85.1],
            ['排队', 51.1, 51.4, 55.1, 53.3, 73.8, 68.7],
            ['快递', 40.1, 62.2, 69.5, 36.4, 45.2, 32.5],
            ['其他', 25.2, 37.1, 41.2, 18, 33.9, 49.1]
          ]
        },
        xAxis: { type: 'category' },
        yAxis: { gridIndex: 0 },
        grid: { top: '55%' },
        series: [
          {
            type: 'line',
            smooth: true,
            seriesLayoutBy: 'row',
            emphasis: { focus: 'series' }
          },
          {
            type: 'line',
            smooth: true,
            seriesLayoutBy: 'row',
            emphasis: { focus: 'series' }
          },
          {
            type: 'line',
            smooth: true,
            seriesLayoutBy: 'row',
            emphasis: { focus: 'series' }
          },
          {
            type: 'line',
            smooth: true,
            seriesLayoutBy: 'row',
            emphasis: { focus: 'series' }
          },
          {
            type: 'pie',
            id: 'pie',
            radius: '30%',
            center: ['50%', '25%'],
            emphasis: {
              focus: 'self'
            },
            label: {
              formatter: '{b}: {@2012} ({d}%)'
            },
            encode: {
              itemName: 'product',
              value: '2012',
              tooltip: '2012'
            }
          }
        ]
      };
      myChart.on('updateAxisPointer', function (event) {
        console.log(event)
        const xAxisInfo = event.axesInfo[0];
        if (xAxisInfo) {
          const dimension = xAxisInfo.value + 1;
          myChart.setOption({
            series: {
              id: 'pie',
              label: {
                formatter: '{b}: {@[' + dimension + ']} ({d}%)'
              },
              encode: {
                value: dimension,
                tooltip: dimension
              }
            }
          });
        }
      });

      option &&myChart.setOption(option);
    }
  }
}
</script>

<style scoped>

</style>